Interactive Iso-Surface Ray Tracing of Massive Volumetric Data Sets
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Date
2007
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
The visualization of iso-surfaces from gridded volume data is an important tool in many scientific applications. Today, it is possible to ray trace high-quality iso-surfaces at interactive frame rates even on commodity PCs. However, current algorithms fail if the data set exceeds a certain size either because they are not designed for outof- core data sets or the loading times are too high because there is too much overhead involved in the out-of-core (OOC) techniques. We propose a kD-tree based OOC data structure that allows to ray trace iso-surfaces of large volumetric data sets of many giga bytes at interactive frame rates on a single PC. A LOD technique is used to bridge loading times of data that is fetched asynchronously in the background. Using this framework we are able to ray trace iso-surfaces between 2 and 4 fps on a single dual-core Opteron PC at 640×480 resolution and an in-core memory footprint that is only a fraction of the entire data size.
Description
@inproceedings{:10.2312/EGPGV/EGPGV07/109-116,
booktitle = {Eurographics Symposium on Parallel Graphics and Visualization},
editor = {Jean M. Favre and Luis Paulo Santos and Dirk Reiners},
title = {{Interactive Iso-Surface Ray Tracing of Massive Volumetric Data Sets}},
author = {Friedrich, Heiko and Wald, Ingo and Guenther, J. and Marmitt, G. and Slusallek, Phillip},
year = {2007},
publisher = {The Eurographics Association},
ISSN = {1727-348X},
ISBN = {978-3-905673-50-0},
DOI = {/10.2312/EGPGV/EGPGV07/109-116}
}